// Assume class definition for Cat is here.
Cat makeCat() {
Cat lady = new Cat("fluffy");
return lady;
}
int main (...) {
Cat molly = makeCat();
molly->eatFood();
return 0;
}
在molly-> eatFood()中会有“使用免费”错误吗？
解决方法
更正您的程序并创建了类Cat的示例实现：
#include <iostream>
#include <string>
class Cat {
public:
Cat(const std::string& name_ = "Kitty")
: name(name_)
{
std::cout << "Cat " << name << " created." << std::endl;
}
~Cat(){
std::cout << "Cat " << name << " destroyed." << std::endl;
}
void eatFood(){
std::cout << "Food eaten by cat named " << name << "." << std::endl;
}
private:
std::string name;
};
Cat* makeCat1() {
return new Cat("Cat1");
}
Cat makeCat2() {
return Cat("Cat2");
}
int main (){
Cat kit = makeCat2();
kit.eatFood();
Cat *molly = makeCat1();
molly->eatFood();
delete molly;
return 0;
}
它将产生输出：
Cat Cat2 created. Food eaten by cat named Cat2. Cat Cat1 created. Food eaten by cat named Cat1. Cat Cat1 destroyed. Cat Cat2 destroyed.
我建议你继续学习一本关于C封面的书籍.
